1 - The most contentious issue is likely to be a provision encouraging commissioners to facilitate voluntary co-operation by witness to be heard in private.

2 - Deportation of the estimated 12 million illegal immigrants has always been and remains a contentious issue.

3 - The increase in the number of newspaper articles exposed as fabrications serves to bolster the contention that publishers are more interested in boosting circulation than in printing the truth.

4 - After a week of contentious public and private debate, a small cluster of astronomers voted to demote Pluto from its planetary status.

5 - Science museums and other institutions are struggling to contend with visitors who reject settled precepts of science on religious grounds.